Preparation and Research of Carbon Fiber Reinforced Nylon 66 Composites for Automotive Light Weighting
In order to improve the mechanical properties and thermal stability of nylon 66(PA66)and make it widely used in the field of automotive lightweight,5%～20% carbon fiber(CF)was doped in PA66 matrix.The results show that the PA66 composite doped with 15% CF has better comprehensive properties than the unmodified PA66 material.The universal testing machine test shows that the tensile strength of PA66/15% CF is 180 MPa,increased by 177%,and the elastic modulus is 19 867 MPa,increased by 7.1 times.The bending strength is 262 MPa,which is increased by 212%,and the bending modulus is 15 867 MPa,increased by 6.4 times.The impact strength of PA66/15% CF is 12.7 kJ/m2,which increases by 49.4% .The mass residual rate of PA66/15% CF composite is 22.8%,and the thermal stability of the material is significantly improved.The study indicates that CF-modified PA66 composites have the potential for use in the field of automotive light weighting,with a 15% doping amount being preferable.
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